package cn.matl.mybatisplus.config;

import com.baomidou.mybatisplus.core.injector.ISqlInjector;
import com.baomidou.mybatisplus.extension.injector.LogicSqlInjector;
import com.baomidou.mybatisplus.extension.plugins.OptimisticLockerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@MapperScan("cn.matl.mybatisplus.mapper") // 扫描我们的mapper文件夹
@EnableTransactionManagement // 自动管理事务
@Configuration // 配置类
public class MyBatisPlusConfig {
    //注册乐观锁插件
    /**
     * 旧版
     */
    @Bean
    public OptimisticLockerInterceptor optimisticLockerInterceptor() {
        return new OptimisticLockerInterceptor();
    }

    /**
     * 新版
     */
    /*@Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor mybatisPlusInterceptor = new MybatisPlusInterceptor();
        mybatisPlusInterceptor.addInnerInterceptor(new OptimisticLockerInnerInterceptor());
        return mybatisPlusInterceptor;
    }*/

    //分页组件
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        /**
         *          PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
         *         // 设置请求的页面大于最大页后操作， true调回到首页，false 继续请求  默认false
         *         // paginationInterceptor.setOverflow(false);
         *         // 设置最大单页限制数量，默认 500 条，-1 不受限制
         *         // paginationInterceptor.setLimit(500);
         *         // 开启 count 的 join 优化,只针对部分 left join
         *         paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
         *         return paginationInterceptor;
         */
        return new PaginationInterceptor();
    }

    // 逻辑删除组件
    @Bean
    public ISqlInjector sqlInjector(){
        return new LogicSqlInjector();
    }
}
